Bip39 generator online https://hubpages.com/@lefwenuuyr Despite the fact that it uses BIP32 process you could even now import BIP39 seeds into Electrum wallet. Also apart from BIp32 You can find BIP44 Model which some wallet use for the generation of seeds. Thanks to the cryptographic design of BIP-39, a weak passphrase https://www.hometalk.com/member/176312665/elva1377050